So I'm toying around with 3D printing or buying the cheap eyeball vents for the aerosport overhead console. I do have the NACA valve vent kit so that can throttle the air. Do I need to spend $200 for the aluminum vents? I have the aluminum vents in my 9A and love them - and will do those on the panel of the 10 - just looking for input for the overhead. Fire away!!!